topic Re: patch and kernel change in one reboot in Operating System - HP-UX

patch and kernel change in one reboot

Paul Wasik — Mon, 15 Jan 2007 10:29:26 GMT

Hello,

I'd like to update a 'reboot required' kernel setting (dbc_max_pct) and then install a 'reboot required' patch bundle. can I update the dbc_max_pct (creating a new kernel, for next boot) and then have the patch install work against the 'next boot' kernel? or do I have to conduct two seperate efforts?

thanks

Re: patch and kernel change in one reboot

spex — Mon, 15 Jan 2007 10:35:23 GMT

Hi Paul,

Yes, this should work. However, if something goes wrong after the reboot, you've now got two potential causes, instead of just one.

PCS

Re: patch and kernel change in one reboot

James R. Ferguson — Mon, 15 Jan 2007 13:02:33 GMT

Hi Paul:

Technical Knowledge Base document KBRC00012410 details the procedure necessary to coincidently apply patches that require a reboot and tune kernel parameters in one pass.

Regards!

...JRF...

Re: patch and kernel change in one reboot

Steven E. Protter — Mon, 15 Jan 2007 13:23:42 GMT

Shalom,

Great doc from JRF.

You don't state your OS. If you are using 11.23 you may need to use kctune and slightly different syntax to make this happen.

SEP

Re: patch and kernel change in one reboot

Paul Wasik — Mon, 15 Jan 2007 13:48:36 GMT

Hey Guys,

thanks for the quick responses, which help direct my researching. I'm on 11.11.

It seems that I can just 'set' the kernel parameter manually (kmtune -s) and then instal the Patch Bundle. here you can see that I changed the variables with a simple command, my next step being the patch install:
root@saturn: kmtune -s dbc_min_pct=1 -s dbc_max_pct=10
root@saturn: kmtune -q dbc_min_pct -q dbc_max_pct
Parameter Current Dyn Planned
=================================================
dbc_min_pct 5 - 1
dbc_max_pct 50 - 10

seems pretty simple and about what the noted Document suggests. do you agree this is a valid approach?

Re: patch and kernel change in one reboot

Paul Wasik — Wed, 17 Jan 2007 11:28:32 GMT

Hi,

I tried my suggestion above which didn't work. I tried the procedures in above noted document which did work. thanks for the help.

Re: patch and kernel change in one reboot

Paul Wasik — Wed, 17 Jan 2007 12:02:09 GMT

close.

Re: patch and kernel change in one reboot

Denver Osborn — Wed, 17 Jan 2007 12:26:20 GMT

cool! I wrote that doc after someone called the RC and asked the same question. This would make you the 2nd person to actaully use it. :)

-denver